The valves are actually at the back of the motor against the firewall. One goes to each head. You are lucky if your issue is the secondary air pump and or valves and hoses. I changed all that and my issue is "carbon buildup in the heads"... a luxury car so technically advanced and yet an issue like this on an '04...really?! Its a $4-5k fix...
Originally Posted by luckydog
When my car had the warning lt it was cracked secondary air hoses to the cats,also one of two secondary air valves was bad and had a air leak at its mounting point.the valves are under the front of engine.
Deceased - 2004 BMW 545i Black/Auburn
-Sports Suspension, Premium and Cold Weather Package, Logic 7 Professional Audio, Rear Sunblinds, Adaptive Xenon Headlights, Active Steering, staggered setup on 124's, Aux Input
MTEC V3.0 AE's, Black and white roundels, Clear LED Side-markers, New Conti ExtremeContact DWS's, Charcoal Filter Delete, 35% Tint, 20%rear.
GARY BETTMAN IS A TOOL!